package com.yayan.util;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.cert.CertificateException;

import javax.net.ssl.HttpsURLConnection;
import javax.net.ssl.SSLContext;
import javax.net.ssl.SSLSocketFactory;
import javax.net.ssl.TrustManager;
import javax.net.ssl.X509TrustManager;
import javax.security.cert.X509Certificate;

import com.alibaba.fastjson.JSON;

public class RequestUtil {
	
	/**
	 * http协议请求
	 * @param requestUrl 请求路径
	 * @param requestMethod 请求方式
	 * @return JSON格式的返回字符串
	 */
	public static String httpRequest(String requestUrl, String requestMethod){
		StringBuffer buffer = new StringBuffer();
        try {

            URL url = new URL(requestUrl);
            //http协议传输
            HttpURLConnection httpUrlConn = (HttpURLConnection) url.openConnection();

            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            //设置请求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

            if ("GET".equalsIgnoreCase(requestMethod))
                httpUrlConn.connect();
            //将返回的输入流转换成字符串
            InputStream inputStream = httpUrlConn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            
            String str = null;
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            bufferedReader.close();
            inputStreamReader.close();
            // 释放资源
            inputStream.close();
            inputStream = null;
            httpUrlConn.disconnect();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return JSON.toJSONString(buffer.toString());
	}
	
	/**
	 * https协议请求
	 * @param requestUrl 路径
	 * @param requestMethod 请求方式
	 * @param outputStr 数据
	 * @return
	 */
	public static String httpsRequest(String requestUrl, String requestMethod, String outputStr){
		StringBuffer buffer = new StringBuffer();
        try {
            // 创建SSLContext对象，并使用我们指定的信任管理器初始化
            TrustManager[] tm = { new MyX509TrustManager() };
            SSLContext sslContext = SSLContext.getInstance("SSL", "SunJSSE");
            sslContext.init(null, tm, new java.security.SecureRandom());
            // 从上述SSLContext对象中得到SSLSocketFactory对象
            SSLSocketFactory ssf = sslContext.getSocketFactory();

            URL url = new URL(requestUrl);
            HttpsURLConnection httpUrlConn = (HttpsURLConnection) url.openConnection();
            httpUrlConn.setSSLSocketFactory(ssf);

            httpUrlConn.setDoOutput(true);
            httpUrlConn.setDoInput(true);
            httpUrlConn.setUseCaches(false);
            // 设置请求方式（GET/POST）
            httpUrlConn.setRequestMethod(requestMethod);

            if ("GET".equalsIgnoreCase(requestMethod))
                httpUrlConn.connect();

            // 当有数据需要提交时
            if (null != outputStr) {
                OutputStream outputStream = httpUrlConn.getOutputStream();
                // 注意编码格式，防止中文乱码
                outputStream.write(outputStr.getBytes("UTF-8"));
                outputStream.close();
            }

            // 将返回的输入流转换成字符串
            InputStream inputStream = httpUrlConn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);

            String str = null;
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            bufferedReader.close();
            inputStreamReader.close();
            // 释放资源
            inputStream.close();
            inputStream = null;
            httpUrlConn.disconnect();
        } catch (ConnectException ce) {
        	ce.printStackTrace();;
        } catch (Exception e) {
        	e.printStackTrace();;
        }        
        return buffer.toString();
	}
}
	
class MyX509TrustManager implements X509TrustManager{
	public MyX509TrustManager(){
		
	}

	@Override
	public java.security.cert.X509Certificate[] getAcceptedIssuers() {
		return null;
	}

	public boolean isClientTrusted(X509Certificate[] arg0) {
		return true;
	}

	public boolean isServerTrusted(X509Certificate[] arg0) {
		return true;
	}

	@Override
	public void checkClientTrusted(java.security.cert.X509Certificate[] arg0,
			String arg1) throws CertificateException {
		
	}

	@Override
	public void checkServerTrusted(java.security.cert.X509Certificate[] arg0,
			String arg1) throws CertificateException {
		
	}
}
